Answer:
256 ft²
Step-by-step explanation:
[tex]SA=2(lw+lh+wh)[/tex] where l is length and w is width and h is height
Plug in the given information
[tex]SA=2(5*4+5*12+4*12)\\SA=2(20+60+48)\\SA=2(80+48)\\SA=2(128)\\SA=2(128)\\SA=256[/tex]
Therefore, the surface area of the rectangular prism is 256 ft².
I hope this helps!
Answer:
We know that
SA = 2(lw + wh + lh)
SA = 2[(5 × 4) + (4 × 12) + (5 × 12)]
SA = 2[20 + 48 + 60]
SA = 2[128]
SA = 256 ft²
[tex] \\ [/tex]
